Window lock



3, 1943- F. J. WESTROPE 2,326,084

WINDOW LOCK Filed Sept. 4, 1941 LIIIIIIIIIIII; I

Patented Aug. 3, 1943 i f 2,326,084 3 WINDOW LOCK Frederick J. Wcstrope; Pleasant Ridge, Mich, as-

signonby mesne assignments, to F. L. Jacobs 00., a corporation of Michigan 7 Application September 4, 1941, Serial No. 409,453

' 1 Claim. "(or 292-226) This invention relates to locks Or latches, and inparticular to window locks for holding windows, in partially orfully open positions, such as vehicle windows. i 7

One object of this inventioniis to provide a window lock which may be unlatched by the natural motions of a person attempting to raise the window. a i

Another object is to provide a window lock having a bolt or latch which is released by the'lifting of a handle which is grasped bythe operator in lifting the window.

Another object is to provide wherein the bolt or latch member engages an inclined lug by which the window may'be held in a partially or fully open position but past which the latch will-move when the operator closes the window. l i

Another object is to provide a window lock or latch having a spring-urged bolt with an inclined surface cooperating with an inclined'lug in such a manner that the spring yieldingly holds the bolt against the lug by aiorce'which may be overcome by the operator in merely pulling down the window.

Another object or looking assembly consisting of two bolts or latches mounted at opposite edges of the window and engageable with lugs in the" window slides, the bolts or latches being operatively connected to levers which, when grasped by the operator in the natural motion of lifting the window, also retract the bolts or latches to permit such lifting;

In the drawing: i I

Figure 1 is a front elevation, partly in section, of a window unit equipped with the windowlock or latch of this invention. s i Figure 2 is an enlarged vertical sectional view through thewindow lock;

Figure 3 is a vertical cross section through the same look taken along the line 3-3 in Figure 2.

Figure 4 is a substantially horizontal section taken along the line 6-4 in Figure 2 In general, the window lock of this invention consists of a retractible bolt or latch which is operatively connected to a handle in such a manner that when the handle is pulled upward by the natural motion of raising the window; the bolt or latch is retracted. The bolt or latch normally engages lugs or recesses mounted in the window frame or slide and these are preferably equipped with inclined contacting surfaces such that they will click past one another when the top of the window is pulled downward by the operator in the natural motion of closing the window. The latch a window lockis to provide a window latching or bolt is yieldingly urged as by a spring, intoengagement with thelugs or recesses in the window frame or slide. l i i i Referring to the drawing indetail, Figure 1 shows a window, generallydesignated l0, such as for a vehicle, equipped with a sill II from which rise the frame side members l2 having inner and outer channels or grooves I3 and M respectively (Figure 4) Slidably mounted in the channel It is a sash frame [5 containing a window pane holder l6 of channel cross section. The latter in turn receives a liner ll of resilient material, such as rubber, having a groove l8 therein for receiving the edge of the glass pane It. The vertical sash frame members [5 are interconnected by the horizontal sash frame-members 253 (Figure l),

only one of these being shown.-

Secured as at 2| toeachvertical sash .frame member i5 is a lock casing 22 having outer and inner portions 23 and 24 interconnected by a side portion 25. The side opposite the portion 25 is open, so, that the portions 23, 24, and 25 form a channelmember through which pass upper and lower pivot pins 26 and 2'l respectively. These pivot pins may be in the formof rivets, as shown, or any other suitable form such as screws. Pivotally mounted on the upper pivot pin 26 is a latch or bolt 28 in the form of a bell crank having a nose portion 29 entering the channel l3, The nose portion 29 has an inclined edge 30 engageable with the correspondingly inclined edge 3! of a lug 32 projecting inwardly into the channel l3 from the window frame side members 12'. The bolt or latch 28 is of channel cross section (Figure 3) with side wings 3-3 interconnected by a top web 34. The side wings 33 extend downwardly to form the operating arms of the bell crank and are interconnected, by a pin 35.near theirlower ends. The top web 34 is bent downwardly as at; 36 to form an abutment for one end of a coil spring 37 which encircles the upper pivot pin '26 and which has its opposite end anchored in the aperture 33 in the rear wall 25 of the casing 22. Thus the bolt or latch 28 is yieldingly urged into latching engagement with the lug 32, the latter having a lower edge 39 which is more steeply inclined to the vertical than the upper edge 36. Each of the channels [3 is provided with a plurality of the lugs 32 spaced at intervals in such a manner that the window may be held either partially or fully open in a number of positions.

Mounted on the lower pivot pin 21 is an oper ating lever 40 likewise in the form ofa bell crank having the outer arm 41 equipped with an outwardly bent handle 01' grip 42 projecting suboperator.

' own i weight.

stantially perpendicularly to the arm 4| and bent over at its outer edge 43 to provide a recess beneath the handle 42 for the finger tips of the The inner arm 44 of the operating lever 40 is provided with a U-shaped slot 45 engaging the opposite sides of the pin 35 to provide a pin and slot connection. The outer arm 4| is bent as alt/ 48 prior to its entry through 'the slot 41 into the interior of the casing 22. In order to properly space the operating'lever- 40 within the casing 22, spacing washers 43 are Y provided on the lower pivot pin 21 on opposite sides of the operating lever 40. e 7

While the construction of-a single lock has been described, it will be understood that pref erably a pair of such locks are provided at opposite vertical edges of the window, "as shownin Figure 1. By this means, the operator'is provided with a handle 42 for each hand.

In the operation -of= the=windowless or latch of this invention, -the'--wi-ndow- HI may be assumed to be in'its closed position, as shown in Figure 1. To-raise the window, the operator inserts his finger tips beneath the 1 handles '42 I of the operating levers 4B and pulls upward with-the natural motion of opening the'w indow. 'The've'r'tical pull upon the handles 42 swings j the operating lever 40 around the pivot pin '21, thereby swinging' the inner arm and-wings fi to the right (Figure'z) by means of the pinand slot connec-- tion 135, 45. This'action overcomes the-urge of the coil spring-31 and causes the'noseportion 29 of the latch or bolt '28 to swing upwardly a nd to the left around its pivot 2'6- away from the lug 32-with Which-it-is engaged. Tl ii action swings the nose portion 29 out -of the patlrof engagement with-the subsequent l-ugs Blso that the window" may beraised to 1 any desired hei'ght without bringing' 'the latch or bolt -23 into contact with the lugs 32. I

When the operator hasraised thewindow to the desired height, he releases the handles 32, whereupon-the window starts dropping under its Meanwhile, however, the coil springs; 31' have urged the'latches or bolts ZRIinto the channels [3 so that the-window drops only a sl-ightdista'nce before the bolts 28 engage a pair of lugs 32 and halt" the downward travel of. the window. The 'Windowis' thus held in its fully or partially opened position by the engagement of the 'inclined surfa'ces-tfl' End-31 0flihgizlatch 23 and lug 32 respectively;

'To' close the' windowfi the operator'can merely grasp the upper horizontal frame member ZO (not shown) and merely pull "downward i upon the window in the naturalmotion'of'closing an ordinary'sliding sash. "-Ihe force thus exerte'd'causes the boltsor latches' zsto swing inward and click past the lugs 32 'as the-window moves downward,

exertion of a powerful force. This is in contrast to the weak and often inadequate force capable of being. exerted by the unaided fingers in devices whichrequiremembers to be shifted by th force exerted by the fingers alone. The unlatchin direction of the'operating levers 4B, furthermore,

is in the same direction as the direction in which the window must be moved to open it. Certain prior-artdevices; however, required the pressing downof a lever to open the window: and at the same time the lifting of the window, thesemutually contradictory motions interfering with the ease of opening the window.

-It1will be evident that'th window latch or look of this invention may be used in vehicles of all types, as well as in stationary structures.

'It'will be'further evident from Figurel that to close the window where the top cross member of the window is not accessible, the operator cai pull downward on the bottom cross member 26. Optionally, the operator can .push downward upon the casings 22. In either case'the inclined latches 28. yield and'click past the inclined lugs 32 as. the window moves downward.

While a specific embodiment of the invention has been described and illustrated, i1; will be understood that various modifications may be made within the scope of theappended' claim without departing fromthe spirit of the invention.

-What I claim is: V

A'W'iILdOW lock comprisinga lock support, a bell crank bolt lever pivotally mounted thereon,

1 said bell crank lever comprising spaced plate-like members connected by a pin at one end and by the bolt lever with its free end engaging said connecting web to normally urgesaid bolt outwardly and downwardly to a locking position.

FREDERICK J WESTROPE. 

